Method of making ellipsoidal shells and tubes



Nov. 10, 1931. A. SHA1-K1N 1,831,397

METHOD OF MAKING ELLIPSOIDAL SHELLS AND TUBES Filed April 28, 1930 54 fr M if I i 1 37 l 3 '7W 37 1""1 ,/l T /S v T S u 71 3? 44 y 3.9 t Z9 fyi/f yff HWK Z9 INVENToge Harm 51m/lm Ill/S A TTORNE Y Patented Nov.Y 1(7), `1931 4' 'UNI-TED smi-Es @PRICE A .esem srieeism; @www Seems i 01," MAKING ,ELLIPSOIDAL SHELLS eND. TUBESl Appiicatipn fjiieasprii es, lean. .seriai No. 47,9411

'llhe prese-nt ,invention relates@ s milled le making ellpsoida-.l shells .and tubes ifi-.e111 .shetimetaL and more partisulerlyioilie ,type lin .which .the .shllhpiftub has ,but i Single *l5 Sea-ni and is free 4from f.c,Qi-frugatiQ111s. y)Suela 'sha-pecl `shells and .ti1bes-aredesiriblein the consi-.runnen lof sheet metal ca -nelle siicks salt y shakers, Loving .cups and :similar @Ms 0f a vinitiales., .also -fo-rbuttens, handles ande-ther '-10 ellipsoidal-shsped and :barrelfsheped ,articles-.er in the CQnstruction ,of .components articles Ireqiiiring such shapes.

Q .To ithisiand.Qtherendsihe inNenLQnfQQil- 4 .Y isists in .thenQYel method .xhereinriafiler .def `x5 scribed, illustrated and `elainied.

Indie accompanying d swings, .Qrmng pai-t of `this application, simi-lai' @characters of' reference indica-te corresponding Vpalais .in

:all the Niews. v

f igs. 1, Zand ,3 show :types of shells-used im making ellipsoidal yshells with a .soldered .seam .Y Y

Figs; 4, 5 andshowtyipes A@f shelismsed in makiiig ell-psqidalsheils yviii/i1 .fa- .clinched Seam. v v

Figs', 8 and 9 show-types efshe'llsl used in .making .eliipsoidal :tubes with la. s Qlds-iierl seam. Y Figs. 1Q, .1l vand i2 show At-ypesof 4simile used in making ellipsoidal V-tlbs -Wixh ,iliclinehedseam.

Fig. 13 i :viewfshowing the Qompleted ,elli-pSOGl-al shell. Y

v ,.Fig. '5l/Lis a-New :showing fthe c,.9iiiple.te.d ellipsoidal tube. .Eig i5 is .a section on the line G1-G, yshew-ing a. solderedseam.

Fig. L6 isfa` 'seetienon v4the .linefGrfGr shewngn inside ,clinched seam.

showing an outside clinched seam.

18 is a .section on ythe line `Showing aiseetiono a tivbe ,or yshell .passible -to be .QQnstruQted :by .the metlmcl .lielsein de,- isr- -bed- Fig ;19a;is View .Sliewing .elliisoflel `frffube used 'inthe-wnstrueion 951' a' Sell Sl' k Eig.- .29 is@ :View Y.S1-.1.1.0ivfing snelli- ,used fn the Gelistlliciioii .of e Q-weile i@ stick,-

Fig. 22. is a View sholwiiilg Shell used in lli@ @Orlsiruetionefiazbulien:

bleib@ :fl/el .fl-15010? plee@ @if Sheet melel is 'fee-leed .er shaped into i blink Shell @i ille. wpeseslwwe inflligs l t0 l2-inclusive;

type Whenshell() is'et bja. plane @119mg line 65 tle-peeipheryillerwfs Shell-45 shown in Fie- 3, yis w-Poilee y0l e less e Semi-Sellers, .el a

giftige peripheny theref.

eesll iqieieeeiellyOppositeloee weiber, :havane-thee @leurres in lli@ im ef lili@ shell aml- Cltheir CeIities in Athe rim-f theV shell si@ @elly *Opeesie Reiches- 50 ed 151, using es @emes tlm-@for the? poelse lllwhelal fin- -teijseted :the line vQi in*teijse@tion f-fhe planes-pffissiiig thrpughrlines AM and lBM.

Y Fig. 17 ,is a` `seetion .011 the Eline ntehes 33 uid 31,1.

Sien 42 show in e; im in @dii-tion liefe-lll elsucll exinsiene l Shell 46 shown in Fig. 6, has in addition to shell 45, two semi-cylindrical intersecting extensions 37 and 53, having punched at their lines of intersection, two diametrically opposite notches 33 and 34 which are the full height of such extensions.

Shell 38 shown in Fig. 10, is made from shell 36, by punching two diametric opposite notches each of which have a semi-circular portion 39 and 40, using as centres therefor the lowest points in notches 33 and 34 in'said shell 36.

Shell 44 shown in 11, is made from` shell 42, by punching two; diametricallyfopf posite notches each of which have a semicircular portion 39 and 40, using as centres therefor the lowest points in notches 33 and 34 in said shell 42.

Shell 48 shown in Fig. 12, is made from shell 46, by punching two diametrically opposite notches each of which have a semi-circular portion 39 and 40, using as centres therefor the lowest points in notches 33 and 34 in said shell 46.

Consider the circular periphery lof shell 30, to be intersect/ed by perpendicular diameters AB and CD, forming arc DAC which is hereinafter referred to as seamline S, and arc DBC which is hereinafter referred to as seam line T.

As the second step or operation, bend and close shell 30, clam-like, by bringing point A in Contact with point B. Seam line S thereby comes or is made to come in full contact with P seam line T, and thus there is formed an `elli soidal shell 23 shown in Fig. 13.

s the inal step, the seam ST is seamed by soldering, welding or ClinChing. However this closing of the seam may be dispensed with, when the material of which the shell is made, yields to the clam-like bending and closing, and stays put and hrm in its nal shape as in Fig. 13, and at thesame time, a closed seam is not necessary, as would be the case if the shell 23 would be used in the constructionV of a covered button as Vshown in Fig. 22.

To form the tube 24 shown in Fig. 14, either cut the shell in Fig. 13 at the planes E-E and F-F, or else by the process above described, using initially the blank shell 32, and subject same to the clam-like bending operation by bringing seam line S into contact with seam line T, using the line connecting the centres of the notches as an axis, and

when lines S and T are in contact, the semicircular notches 50 and 51 would close to form holes 35. The seam ST is seamed if required,

or else left open if possible.

When it is desired Jto secure the seam ST Vof shell 23 by either the inside clinched seam shown in Fig. 16, or by the outside clinched seam shown in Fig. 17, I prefer to use initially the blank shell 36 shown in Fig. 4. Bring seam line S in contact with seam line T,

23 will be formed by such process. The cylindrical extended portions 54 and 54 are used fer making either seam shownin Figs. 16 or 1 When it is desired to secure the seam ST of tube 24' by either'of said clinched seams, I prefer to use initially the blank shell 38 shown in Fig. 10. Bring seam line S in contact with seam line T, using as an axis for the clam-like bending operation the same axis as used in forming shell 23 out of blank shell 36. When seam lines S and T will be in full contact, then the notches 39- and 40 will close to form circular holes 35, and tube 24 `will be formed by such process. The cylindrical extended portions 54 and 54 are used Vfor making either seam shown in Figs. 16 or 17.

All of the blank shells shown in Figs. 1 to k12 inclusive, when subjected to the clam-like formakingellipsoidalshells23. f The remainderV of the blank shells are used :for making ellipsoidal tubes 24. Those shells` having metal portions above the seam lines, are used preferably when the seamis kto befof the clinched variety. Those Vshells having no metal portions above the seam lines, are used when the seam isto be soldered, or just left open, meaning, unseamed, butmay also be used for a clinched seam.

When it is desired to form an ellipsoidal shell 23 which is tall and slender, use intially shells 41 and 42. If ellopsoidal tubes 24 of similar proportions are required,use blank shells 43 and 44. 'f

Vhen it is desired to form ellipsoidal shell 23 which are short and stout, use initially shells 45 and 46. For ellipsoidal tubes 24 of similar proportions, use blank shells 47 and In the construction of silverware articles, it is desirable to make shell 23 and tube 24 to shown in Fig. 18. For such purpose, use a blank shell which instead of being a portion of a spherical shell, is a portion of an ellipsoidal shell as shell 53 shown in Fig. 1.

The uses to which the ellipsoidal shells 23 and the ellipsoidal tubes 24 can be put are numerous. A few adaptations are shown in the drawings. In Fig. 19, tube 24 serves as the salt compartment of a salt shaker having a perforated cap 25, and a base 26. In Fig. 20, tube 24 is used in the construction of a candle have a cross-section similar to the section stick by having base 28 soldered into one end lim thereof, and candle socket 27 being soldered into the other end. In Fig. 21, shell 23 is soldered to a hub 29, and thus serves in the construction of a door knob. In Fig. 22, shell 23 is soldered to a little hub 31 which has drilled in it a hole 52, and thus serves in the construction of a button, which may be covered with either cloth or leather 49. The shell 23 and the tube 24 may be cut in half at plane G-G and used in the construction of cups of a shape which would be very difficult to either spin or stamp.

From the foregoing it will be seen, that there has been provided an improved method of forming ellipsoidal shells and ellipsoidal or barrel-shaped tube-s from sheet metal, so that the shell or tube has but one seam and is free from corrugations.

l. The method of forming shells which consists in shaping a flat sheet into an open curvilinear shell having all points on its rim lying in a single plane, and bending said shell clam-like until closed.

2. The method of forming shells which consists in shaping a. flat sheet into an open curvilinear shell having all points on its rim lying in a single plane, bending said shell clam-like until the meeting edges are in full contact, and then seaming the meeting edges.

3 The method of forming ellipsoidal shells which consists in shaping a flat sheet into a portion of a spherical shell, and bending said shell clam-like until the meeting edges are in full contact.

4. The method of forming ellipsoidal shells which consists in shaping a flat sheet into a. portion of a spherical shell, bending said shell clam-like until the meeting edges are in full contact, and seaming the meeting Y edges.

5. The` method of forming tubes which the rim of the shell, bending the shell clam-yy like about the line connecting the centres of n the notches as an axis, until the notches close to form circular holes and the meeting edges of the shell are in full cont-act, and sea-ming the meeting edges.

In Witness whereof, I affix my signature. AARON SHATKIN.

consists in shaping a flat sheet into an open 'curvilinear shell, punching two semi-circular diametrically opposite notches in the shell, having their centres in the rim of the shell, and bending the shell clam-like until the n otchesclose to form circular holes and the meeting edges are in full contact.

6. The method of forming tubes which consists in shaping a flat sheet into an open curvilinear shell, punching two semi-circular diametrically opposite notches in the shell, having their centres in the rim of the shell, bending the shell clam-like until the notches close to form circular' holes rand the meeting edges are in full contact, and seamin'g the meeting edges.

7. The method of forming ellipsoidal tubes which consists in shaping a fiat sheet into a portion of a spherical shell, punching two semi-circular diametrically opposite notches in the shell having their centres in i! ythe rim of the shell, and bending the shell 

